how to tell how many nvme drive slots a motherboard has?

Different Types of M2 SSD SATA or NVME nvme slot types 2 drive on a PCIe expansion card, enabling the use of an through the PCIe slots What are the differences between , mSATA and NVMe SSDs? is nvme vs m2 slot difference Not all NVMe drives are created equal · x4 PCIe NVMe SSDs are faster than x2 PCIe types · The more NAND chips, the more paths and destinations

nvme in pcie slot NVMe cards, as you probably are aware, require an M key slot even through they're electrically similar to E key, save for the extra 2 lanes